accident -- the accident aviation branch of united kingdom, they'll be leading this investigation with the ntsb coming to assist as an accredited representative. the boeing folks are already on the ground. they're going to find out, i believe, what happened here but the good news at least for boeing if there's any silver lining in it right now is that it doesn't appear to be anything to do with the battery. however, they're going to be looking to make sure that is the fact. the batteries are located much lower in the aircraft quite close to the wing in the rear and then also some in the front as well near the cockpit. the fire actually appeared on the crown up near the tail on the top of the skiff. >> so, mark if it's not the batteries, it's obviously something else. in some ways that could be worse for boeing no? >> well the engineers are back to their seven-day-a-week and the experts are. they're going the find out exactly what happened here and then fix it. >> right. officials have publicly said that evidence suggests this is not because of the batteries. you had the asiana crash, u another